添加项目文件。

TestingModule/Views/CommandTree.xaml

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+<UserControl x:Class="TestingModule.Views.CommandTree"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:i="http://schemas.microsoft.com/xaml/behaviors"
+             xmlns:model="clr-namespace:UIShare.UIViewModel;assembly=UIShare"
+             xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"
+             xmlns:prism="http://prismlibrary.com/"
+             mc:Ignorable="d"
+             d:DesignHeight="450"
+             d:DesignWidth="800">
+    <i:Interaction.Triggers>
+        <i:EventTrigger EventName="Loaded">
+            <prism:InvokeCommandAction Command="{Binding LoadedCommand}" />
+        </i:EventTrigger>
+    </i:Interaction.Triggers>
+    <Grid>
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="439*" />
+            <ColumnDefinition Width="361*" />
+        </Grid.ColumnDefinitions>
+        <GroupBox Header="指令"
+                  Grid.ColumnSpan="2">
+            <Grid>
+                <Grid.RowDefinitions>
+                    <RowDefinition Height="Auto" />
+                    <RowDefinition Height="*" />
+                </Grid.RowDefinitions>
+
+                <!-- 搜索框 -->
+                <StackPanel Grid.Row="0"
+                            Orientation="Horizontal"
+                            Margin="10,0,7,12"
+                            VerticalAlignment="Center">
+                    <!--<TextBox MinWidth="150"
+                             Height="25"
+                             Margin="0,0,5,0"
+                             VerticalContentAlignment="Center"
+                             Text="{Binding SearchText, UpdateSourceTrigger=PropertyChanged}"
+                             materialDesign:HintAssist.Hint="搜索内容">
+                        <i:Interaction.Triggers>
+                            <i:EventTrigger EventName="KeyDown">
+                                <prism:InvokeCommandAction Command="{Binding SearchEnterCommand}" />
+                            </i:EventTrigger>
+                        </i:Interaction.Triggers>
+                    </TextBox>-->
+                </StackPanel>
+
+                <!-- TreeView -->
+                <TreeView Grid.Row="1"
+                          ItemsSource="{Binding InstructionTree}">
+                    <TreeView.Resources>
+                        <HierarchicalDataTemplate DataType="{x:Type model:InstructionNode}"
+                                                  ItemsSource="{Binding Children}">
+                            <TextBlock Text="{Binding Name}" />
+                        </HierarchicalDataTemplate>
+                    </TreeView.Resources>
+                    <!-- 双击 -->
+                    <i:Interaction.Triggers>
+                        <i:EventTrigger EventName="MouseDoubleClick">
+                            <prism:InvokeCommandAction Command="{Binding TreeDoubleClickCommand}"
+                                                       CommandParameter="{Binding SelectedItem, RelativeSource={RelativeSource AncestorType=TreeView}}" />
+                        </i:EventTrigger>
+                    </i:Interaction.Triggers>
+
+                    <!-- 右键菜单 -->
+                    <TreeView.ContextMenu>
+                        <ContextMenu>
+                            <MenuItem Header="重新加载"
+                                      Command="{Binding ReloadCommand}" />
+                        </ContextMenu>
+                    </TreeView.ContextMenu>
+                </TreeView>
+
+            </Grid>
+        </GroupBox>
+    </Grid>
+</UserControl>